When “Low Fat” and “Low Sugar” Labels Hide a Bigger Problem

14 December 2025 Lachlan McKenzie AIM Extra 1
Low-fat and low-sugar labeled food products.

Modern nutrition science tells a more complicated story than food labels suggest. When fat or sugar is stripped out, flavour, texture, and shelf life still have to come from somewhere – and the replacements are often the real issue.

For decades, we were told a simple story about food.

Fat was bad.
Sugar was bad.
Cholesterol was bad.

So the solution seemed obvious: remove them.

Over the past decade, nutrition science has quietly revised many of these assumptions – even if public messaging and food marketing haven’t caught up. When we look more closely at how food actually behaves in the body, the old story starts to fall apart.

Because food doesn’t work like a maths equation. When something important is taken out, something else has to be put back in – for flavour, texture, shelf life, or simply to make the product edible.

And that’s where things quietly went wrong.

Cholesterol was never the villain

Cholesterol is not a toxin. It’s essential to life.

Your body uses it to:

  • build cell membranes
  • make hormones such as cortisol and testosterone
  • produce vitamin D
  • support brain function

Your liver makes most of the cholesterol you need even if you eat none.

Heart disease is now understood as a chronic inflammatory process, not simply the result of “too much cholesterol”. Cholesterol plays a role, but it is necessary, not sufficient. Inflammation, insulin resistance, blood sugar stability, blood pressure, and overall metabolic health all shape cardiovascular risk far more than a single lab number.

Reducing everything to “cholesterol bad” was always an oversimplification – useful for headlines, but not for understanding how disease actually develops.

Fat was wrongly demonised

Dietary fat became the main target in the late 20th century, largely because it was calorie-dense and easy to blame.

But fat does important things in food:

  • it carries flavour
  • it creates satiety
  • it slows digestion
  • it provides texture and mouthfeel

When fat was removed from foods, manufacturers had to replace it. What usually went in instead was sugar, refined starch, gums, or additives.

As a result, many low-fat foods:

  • spike blood glucose more than their full-fat counterparts
  • are less filling
  • encourage overeating

We now know that many fats – especially those from whole foods such as olive oil, nuts, seeds, dairy, and fish – are neutral or beneficial for metabolic health.

Industrial trans fats deserved their bad reputation. Most natural fats did not.

Sugar matters – especially added fructose

Not all sugars behave the same way in the body.

Glucose is used by many tissues throughout the body.
Fructose is processed almost entirely by the liver.

When fructose is added to foods – particularly in syrups, juices, and ultra-processed products – it can:

  • raise triglycerides
  • promote fatty liver
  • worsen insulin resistance
  • shift cholesterol toward more harmful particle patterns

Fructose in whole fruit is different. Fibre, chewing, water content, and slower absorption make it self-limiting and metabolically safer.

This is why avoiding added fructose, while still eating whole fruit, is such a powerful and practical rule.

“Low sugar” doesn’t mean low impact

Sugar does more than sweeten food. It also provides:

  • bulk and structure
  • browning and flavour development
  • preservation
  • moisture retention

When sugar is removed, something else must replace it.

That replacement is often:

  • refined starch (which still becomes glucose)
  • artificial sweeteners
  • sugar alcohols
  • flavour enhancers

So a “low sugar” label doesn’t guarantee stable blood sugar or better metabolic outcomes. It often just means the sugar came in through a different door.

Artificial sweeteners aren’t metabolically invisible

Artificial sweeteners don’t provide calories, but they still interact with the body.

In some people – especially with frequent or high intake – they can:

  • disrupt appetite regulation
  • alter gut microbiota
  • provoke insulin responses
  • worsen glucose control over time

Newer sweeteners such as stevia and monk fruit appear less disruptive than older artificial sweeteners, particularly in small amounts. But even these are best viewed as occasional tools rather than everyday staples.

The goal isn’t perfection – it’s reducing constant background sweetness.

Why “low fat + low sugar” foods are often the worst

When both fat and sugar are removed, manufacturers rely heavily on ultra-processing to rebuild flavour and texture.

These foods:

  • digest rapidly
  • bypass natural satiety signals
  • encourage overconsumption
  • often lead to worse metabolic outcomes

This is why foods with the loudest health claims often deserve the closest inspection.

A quieter, more effective approach

Instead of chasing labels, a few simple principles work surprisingly well:

  • Avoid added fructose, but don’t fear whole fruit
  • Let savoury foods stay savoury (very low added sugar)
  • Prefer foods that haven’t had something “removed”
  • Accept natural fats as part of real food
  • Treat sweeteners as occasional tools, not defaults

These aren’t rigid rules. They’re guardrails that reduce insulin spikes, improve lipid profiles, and lower inflammation without turning eating into a full-time job.

The real lesson

Food problems didn’t start because people ate fat or enjoyed sweetness.
They started when food became something engineered, not cooked.

When food doesn’t need fixing, it usually doesn’t need marketing either.

Understanding that difference matters far more than any label on the front of a packet.

References and further reading

For readers who want to explore the evidence in more depth:

 


Keep Independent Journalism Alive – Support The AIMN

Dear Reader,

Since 2013, The Australian Independent Media Network has been a fearless voice for truth, giving public interest journalists a platform to hold power to account. From expert analysis on national and global events to uncovering issues that matter to you, we’re here because of your support.

Running an independent site isn’t cheap, and rising costs mean we need you now more than ever. Your donation – big or small – keeps our servers humming, our writers digging, and our stories free for all.

Join our community of truth-seekers. Donate via PayPal or credit card via the button below, or bank transfer [BSB: 062500; A/c no: 10495969] and help us keep shining a light.

With gratitude, The AIMN Team

Donate Button

Post Views: 694
About Lachlan McKenzie 163 Articles
I believe in championing Equity & Inclusion. With over three decades of experience in healthcare, I’ve witnessed the power of compassion and innovation to transform lives. Now, I’m channeling that same drive to foster a more inclusive Australia - and world - where every voice is heard, every barrier dismantled, and every community thrives. Let’s build fairness, one story at a time.

1 Comment

Leave a Reply

Your email address will not be published.


*